SPRINGFIELD – Abc40 has reported about 20 percent of the city school bus-riding students did not make it to school on time due to a problem that delayed special transportation vehicles from leaving the bus company depot.

School Department spokeswoman Azell M. Cavaan said the smaller school buses and vans were not able to leave the depot on time.

Cavaan, according to abc40, said about 80 percent of the city’s school bus riding students, those who ride on full-length buses, were not affected.

Officials with First Student, the Cottage Street-based bus company that provides transportation services to city schools, could not be reached for comment.